Music-leaf turner.



T. BOLDIZZONI.

MUSIC LEAF TURNER.

APPLICATION FILED JUNE 7, 1913.

Patented Feb. 17

2 SHEETS-SHEET 1.

Zeaczida 2305626252 COLUMBIA PLANOGRAPH c0., WASHINGTON, D. c.

T. BOLDIZZONI.

MUSIC LEAF TURNER.

uruouxon FILED mm: 7, 1913.

1 ,087,71 2. Patented Feb. 17 1914.

2 SHEETSSHEET 2.

COLUMBIA PLANOGRAPH C0.. WASHINGTON, D. c.

UNITED STATES 'PATEN TEOBALDO BOLDIZZONI, OF NEW YORK, N. Y., ASSIGNOR OF ONE-HALF TO PETER BOSIO, OF NEW YORK, N. Y.

MUSIC-LEAF TURNER.

To all whom it may concern Be it known that I, TEOBALDO BOLDIZZOXI, a subject of the King of Italy, residing at New York city, in the county of New York and State of New York, have invented new and useful Improvements in Music-Leaf Turners, of which the following is a specification.

The general object of the invention is to improve the construction of music leaf turners in point of simplicity and leaf turning properties. And to this end the invention resides in providing engaging elements for the music leaves and a single turning arm and adapting these elements to coact, whereby, to effect the turning of the leaves successively with a single turning arm.

Other objects will appear and be better understood from that embodiment of my invention of which the following is a specification, reference being had to the accompanying drawings forming part hereof, in which 1 Figure 1 is a contracted front elevation of my device in use. Fig. 2 is a sectional detail showing by full lines the normal. position of the operating arm and by dotted lines the position of the said arm preparatory to engaging with a music sheet, and the mechanism for operating the turning arm. Fig. 3 is a view similar to Fig. 2 but showing the position of the operating arm after the turning of the music leaf. Fig. 4 is a section taken on the line 41 1 of Fig. 3 looking in the direction of the arrow. Fig. 5 is a detail front elevation of a modified form of leaf turner. Fig. 6 is a detail elevation of the leaf turning element used in connection with the modified form in Fig. 5. Fig. 7 is a view similar to Fig. 5 with parts broken away to show the arrangement of the leaf turning mechanism. Fig. 8 is a modified form of treadle or foot operated mechanism. Fig. 9 is a detail perspective of a modified form of engaging element. Fig. 10 is a detail front elevation of a further modified form.

The mechanism forming the subject-matter of my present invention, is adapted for turning the leaves of a music book successively. The turning mechanism is indicated generally by a and the book whose leaves are to be turned is indicated generally by b. The book is adapted to the leaf turning Specification of Letters Patent.

Application filed June 7, 1913.

Patented Feb. 17, 1914.

Serial No. 772,323.

mechanism a by having its leaves provided with pockets. These pockets may be formed as shown in Fig. 1 by attaching the ends of strip 5 to one face and adjacent the lower end of the leaf, or as shown in Fig. 9 a kerf 6 may be formed in the leaf 7 and opoosed face of the adjacent leaf, whereby, to insure against contact between the lower portions of opposed faces of adjacent leaves or as shown in Fig. 10, the pocket may be formed by attaching, such as by tabs 9, the opposite ends of a wire 10 to one face of the leaf. The book Z) is also adapted to the stand 0, as by providing lugs 11 on the back of the book, these lugs being positioned so as to receive a pintle 12 slidingly fitted in the stand 0.

The leaf turning mechanism a comprises a leaf turning arm 13, and means for turning the arm and moving it into and out of engagement with the pockets on the successive leaves of the book I). As shown this arm 13 is pivotally connected to a spiral 14 upon which operates a nut 15 with a thread conforming to the spiral 14. The nut is arranged at one end of a presser foot 16 which is fixed to a rod 17 as shown in Fig. 3. A keeper 18 in the form of a casing surrounds the spiral 141. This casing is U-shaped in horizontal section, its lower end being opened and bearing on the presser foot 16 and its upper end has an opening for the spiral 141 and formed in this upper end is a fillet 19 which has an opening for the passage of a rod 20, which rod is fastened to the fillet by suitable means such as a set screw 21. The upper portion of the keeper also has a horizontal slot 22 through which the leaf turning arm 13 passes. A flexible connection in the form of a yoke 23 and a pivot pin 24 is established between the turning arm 13 and the rod 17.

The parts just described are contained in a casing which is adapted for attachment to the back of the stand 0, the said casing being so arranged on the stand as to have the turning arm 13 disposed below the ledge 25 of the stand.

As shown the casing is divided into an upper compartment 26 and a lower compartment 27. The rod 17 slides through guide openings in the upper and lower ends 28 and 29 of the upper compartment 26, the lower end portion of said rod and the presser foot 16 being contained in the lower compartment 27. The opposite ends of the spiral 1 1 are journaled in the lower end 30 of the compartment 27 and the upper end 29 of the said compartment, which end 29, as before stated, forms the lower end of the compartment 26, all of which is shown in Figs. 2 to 4 inclusive. The rod 20 is slidingly fitted in guide openings in the end walls 29 and 30 and as shown in the drawings is parallel with the rod 17. A compression spring 31 functions to hold the rod 17 in normal position and maintain the presser foot 16 in spaced relation to the lower end 30 of the lower compartment 27 and a second compression spring 32 surrounds the rod 20 and operates to hold the said rod in normal position, as shown in Figs, 3 and 1, that is with a ledge in the form of a nut 33 on the rod in spaced relation to the end 30 and in contact with the presser foot 16.

A trigger in the form of a bell crank 34: is arranged in the upper compartment 26 and is adapted when moved in one direction, to depress the rod 17 and the parts connected directly and indirectly thereto, by moving into contact with an arm 35 secured to the rod 17 and arranged in the compartment 26. This arm 35, as will be observed by referring to Fig. 3, operates as a bearing for one end of the spring 31.

A spring-pressed latch 36 pivoted as indicated at 37 to the upper compartment 26, is normally in contact with a head 38 at the upper end of the rod 20. This head 38 serves as a bearing for one end of the spring 32 and has a detent into which the latch moves when the rod 20 is depressed through the action of the bell crank 34 on the arm 35. The latch 36 is arranged in the path in which the bell crank or trigger 34. moves when the said bell crank is returning to normal position and away from the arm so that the bell crank functions to unlatch the latch 36 just prior to being restored to its normal position as shown in Fig.

Suitable pull mechanism is employed for operating the bell crank or trigger 34L and in the present instance this mechanism is operable by one foot of the player. As shown in Fig. 1 a treadle 39 pivoted at one end to a base or stand 40 has its free end portion bearing on trunnions, one of which is shown in Figs. 1 and 8 and indicated by 4-1. These trunnions are carried by a cross piece slidingly fitted in an upright tubular easing %2 which has slots through which the trunnions pass as shown in Figs. 1 and S. The cross piece is connected by wire or an equivalent flexible element to and this link 14- 1s connected by a link L-t pin and slot connections 4-5 to the bell crank or trigger 3 1. A yoke 46 serves to pivotally connect the link 44 with the wire 41:3 and also serves as a bearing for one end of a compres sion spring 4.7 arranged in a laterally eX- tending tubular casing 48. The modilied form of treadle shown in Fig. 8 differs from that shown in Fig. 1, in that the treadle bar 49 bears on the trunnions 41 at a point be tween its free end which carries the tread plate 50 and its other end which is pivoted to the base 51 Now with the parts arranged in their normal positions as shown in Figs. 1 and 2 the leaf turning arm 13 is arranged in the pocket at the lower end of the first music leaf to be turned. Here it will be observed that the rods 17 and 20, the keeper 13, the presser foot 16 and ledge 33 are in elevated positions. Thus when foot pressure is applied to the treadle and the cross bar depressed against the tension of a spring 52 in the casing 452, the wire will draw the link 44 against the tension of the spring 4-7. Now as the link 44: is drawn into the casing 4 3 the trigger or bell crank 34 is rocked to the right in Fig. 2 and into contact with the arm 3.3. This has the effect of depressing the rod 17 and moving the nut 15 over the spiral 1%. This action of the nut on the spiral has the el'lect of turning the spiral, which, by virtue of its connection with the leaf turning arm 15, turns the latter. Now this turning of the spiral continues until the turning of the leaf has been completed at which time the leaf turning arm will be on the left in Fig. 1 and in the notch 53 in the ledge 25, which notch is opposite a similar notch 5- 1; on the right in Fig. 1, at which time the nut will be adjacent to the lower portion of the spiral as shown in Figs. 3 and 4. lVhcn the parts are in the lastnamed positions it is manifest that if the pressure be removed from the treadle 39 the leaf will be turned to its original position under the action of the lea f turning arm which is actuated to make this return movement by the tension on the springs 31-4t7 and 52. .Tf on the other hand, it is not desired to return the said leaf continued pressure on the treadle 39 will have the effect of moving the presser foot 16 into contact with the ledge whereupon the rod 20 together with the keeper 13 -.on nected thereto will be depressed against the action of the spring Now this downward movement on the part of the keeper operates to move the leaf turning arm from the position shown by dotted lines in Fig. 3 to that shown by full lines in the same figure, it being manifest that when the keeper is in its normal position the slot 22 is approximately on a line with the pivot bin 24: but on downward movement of the keeper the slot moves downwardl beyond the pivot pin 2% and the upper side of the slot rocks the turning arm downwardly to the position shown in full lines as hereinbcfore stated. This downward movement on the part of the turning arm effects disengagement of the same from the pocket in the lower end of the leaf and the downward movement on the part of the keeper pulls the rod 20 downwardly until the latch 36 enters the detent in the head 38. This locking of the keeper y the latch is shown in Figs. 3 and 4; and now it is manifest that upon removin pressure from the treadle 39 the free end of the leaf turning arm upon being restored to its normal position as hereinbefore described, will, when the keeper is latched and during re turn movement to the right in Fig. 1, move in a plane below that in which it moved during the turning of the leaf so that upon entering the notch 54 on the right in Fig. 1, the free end of the keeper will be positioned below the pocket in the music leaf, at which time the trigger will be approximately in contact with the latch 86 so that when the leaf turning arm is fully entered in the notch 54 the bell crank will have moved into its normal position and moved the latch from the detent in the head 38. Upon unlatching the latch 36 the rod 20 will move upwardly under the action of its spring 32 carrying with it the keeper 18, which action on the part of the keeper will move the leaf turning arm from the position shown by dotted lines in Fig. 2 to that shown by full lines in the same figure. Now when it is remembered that the leaf turning arm upon entering the notch 54 on the right in Fig. l is in alinement with the pocket in the music leaf, it is obvious that the free end portion of said arm will enter the pocket when allowed to move upwardly as just described.

\Vith the modified form shown in Figs. 5 to 7 inclusive, the leaf turning arm 55 is pivoted for vertical movement on a support 56 and is also pivotally connected at its in ner end to the upper end of a screw 57. The screw 5! is screwed into a drum 58 and carries a radially extending pin 59 which extends through a semi-circular recess 60 in a lateral extension 61 of the drum. The drum 58 is arranged at the lower end of a tubular casing 62 which houses the exten sion 61 and through which extends the screw 57, a set screw 63 operating to prevent longitudinal movement of the drum with respect to the casing. A flexible element 64 is coiled around the drum 58 and is connected at one end to suitable mechanism such as to either of the foot operating mechanisms hereinbefore described. Now when the turning arm is in its normal position and on the right of the stand as shown in Fig. l the pin 59 will occupy the position shown in Fig. 6, that is the said pin will bear on the right hand end of the slot 60 so that when the element 64 is pulled the drum, screw and turning arm will move as a unit. the arm operating to turn the leaf in the ordinary manner. During this movement on the part of the turning arm it will be observed that the end of the said turning arm is in the pocket of the leaf. Now when the leaf is turned and the arm enters the socket on the left in the said figure and pressure removed from the foot operated member, a coil spring 65 encircling the casing '2 and connected at one end to the same and to the drum 58 and arranged so as to be tensioned upon the turning of the drum by the element 64;, operates to turn the drum in the opposite direction and rewind the element 64. As the drum moves under the act-ion of the spring 65 the right hand end of the slot 60 moves away from the pin 59 and the drum turns on the screw 57. Since the drum is confined against endwise movement in the casing it is manifest that as the drum turns, the screw will move endwise and upwardly. This motion on the part of the screw has the effect of tilting the turning arm from the position shown by dotted lines in Fig. 5 to the position shown by full lines in the same figure and has the further effect of disengaging the turning arm from the pocket in the leaf. By the time the turning arm is disengaged from the said pocket, the left hand end of the slot 60 will have moved into contact with the screw 59 so that further turning movement on the part of the drum will return the turning arm to its normal position on the right in Fig. 1 but below the pocket in the music leaf. Upon turnin the drum a second time the left hand end or the slot moves away from the pin 59 and the drum turns on the screw whereupon the said screw will move downwardly and thereby raise the turning arm to the position shown by dotted lines in Fig. 5 and into the pocket of the music leaf. Now continued turning of the drum will bring the right hand end of the slot into contact with the pin whereupon the turning arm will turn the leaf as before described.

lVhat is claimed as new is:

1. A music leaf turner including a horizontally oscillating support, a leaf turning arm horizontally pivoted to the support, means for oscillating the support, means for moving the arm vertically in one direction when the support is turned in one direction, means for locking the arm against vertical movement during the turning of the support in the opposite direction, and means for unlocking the arm and moving it vertically in the opposite direction at the end of the lastnamed turning movement of the support.

2. In a music leaf turner, the combination of a casing, a spiral mounted in the casing and arranged for turning movement in opposite directions, a leaf turning arm pivotally connected to the spiral, means for turnturningarm when the same is moved into 10 the last-named position.

In testimony whereof I afhx my signature in presence of two Witnesses.

TEOBALDO BOLDIZZONI.

Vitnesses JOHN A. ,UONEGAN, C. JAMEs CnoNIN.

ing the spiral in opposite directions, means operated by the spiral turning means for moving the leaf turning arm on its pivot when the leaf turning arm is moved into one position by the spiral, means for looking the leaf turning arm against movement on its pivot While the same is turning to an opposite position, said means being operable by the spiral moving means to unlock the leaf Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. G. 

